Ifire Technology Corp.

Sanyo Electric Co., Ltd.

Ifire IP Corporation

Daniel Joseph Seale

Xingwei Wu

Michael Roger Westcott

David Robin Lovell

Yang Maizhi

Donald Edward Carkner

Li Wu

Hiroki Hamada

Isao Yoshida

Daniel Darcy Doxsee

Guo Liu

George A Kupsky

Yufeng Ye

William M Smy

Zhang Hui

Ye Yufeng

Ahn Sung-II

Wu Xinguei

Hui Zhang

M Smy William

Lee Seong-Eui

A novel sub-structure of a thick film dielectric electroluminescent display and a thick film dielectric electroluminescent display incorporating the same is provided. The sub-structure comprises a barrier layer between a substrate and a thick film dielectric layer. The barrier layer is chemically inert with respect to the substrate and the thick film dielectric layer and the barrier layer inhibits diffusion of at least one chemical species therethrough. This sub-structure results in a higher capacitance for the thick dielectric layer, which provides higher display luminance and a reduced tendency for dielectric breakdown of the thick dielectric layer. The barrier layer permits for lower cost substrates, such as glass, to be used.

Barrier layer for thick film dielectric electroluminescent displays

The invention provides a method of forming a patterned phosphor structure having red, green and blue sub-pixel elements for an AC electroluminescent display. The method involves selecting first and second phosphors, each emitting light in different ranges of the visible spectrum, but whose combined emission spectra contains red, green and blue light; depositing and patterning the phosphors in a layer to form a plurality of repeating phosphor deposits; and providing means associated with the phosphor deposits, and which together with the phosphor deposits form the red, green and blue sub-pixel phosphor elements, for setting and equalizing the threshold voltages, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each modulation voltage used to generate the desired luminosities for red, green and blue; and optionally annealing the patterned phosphor structure so formed.

Method of forming a patterned phosphor structure for an electroluminescent laminate

The present invention is a low firing temperature, composite thick film dielectric layer for an electroluminescent display. The composite thick film dielectric layer comprises;

Low firing temperature thick film dielectric layer for electroluminescent display

A patterned phosphor structure and EL laminate containing same, forming red, green and blue sub-pixel phosphor elements for an AC electroluminescent display. The patterned phosphor structure includes at least a first and a second phosphor emitting light in different ranges of the visible spectrum, but with combined emission spectra contains red, green and blue light, the first and second phosphors being in a layer, arranged in adjacent, repeating relationship to each other to provide a plurality of repeating first and second phosphor deposits. The phosphor structure also includes one or more means associated with one or more of the first and second phosphor deposits for setting and equalizing the threshold voltages of the red, green and blue sub-pixel phosphor elements, and for setting the relative luminosities of the red, green and blue sub-pixel phosphor elements so that they bear set ratios to one another at each operating modulation voltage used to generate the desired luminosities for red, green and blue.

Electroluminescent laminate with patterned phosphor structure and thick film dielectric with improved dielectric properties

Growing community of inventors

Toronto, Canada

Daniel Joseph Seale